[Elecraft] KBPF3A < TT Jupiter on Broadcast Band

Bob McGraw - K4TAX rmcgraw at blomand.net
Wed Oct 21 18:42:21 EDT 2015


Per the manual the 538 Jupiter uses a floating audio output circuit for 
the speaker.  Therefore, one can not ground one side of the speaker line.



73
Bob, K4TAX

On 10/21/2015 10:00 AM, Carl Jón Denbow wrote:
> Thanks, Frank.  That's interesting because the shield is usually grounded.  I guess this means I'm muting the Jupiter speaker when I connect the K3s because I'm  grounding the floating Jupiter speaker circuit to the K3s ground.  73 de Carl, N8VZ
>
> Sent from my iPhone
>
>> >On Oct 21, 2015, at 6:29 AM,"kg9hfrank at gmail.com"  <kg9hfrank at gmail.com>  wrote:
>> >
>> >
>> >Carl, see Jupiter manual, text on I-1
>> >Ungrounded speaker, speakers terminals balanced load.
>> >Frank, KG9H
>> >
>> >



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